I said to the Prophet ﷺ: Messenger of Allah, will you not appoint me to a public office? He stroked my shoulder with his hand and said: Abu Dharr, thou art weak and authority is a trust. and on the Day of judgment it is a cause of humiliation and repentance except for one who fulfils its obligations and (properly) discharges the duties attendant thereon.  

قُلْتُ يَا رَسُولَ اللَّهِ أَلاَ تَسْتَعْمِلُنِي قَالَ فَضَرَبَ بِيَدِهِ عَلَى مَنْكِبِي ثُمَّ قَالَ يَا أَبَا ذَرٍّ إِنَّكَ ضَعِيفٌ وَإِنَّهَا أَمَانَةٌ وَإِنَّهَا يَوْمَ الْقِيَامَةِ خِزْىٌ وَنَدَامَةٌ إِلاَّ مَنْ أَخَذَهَا بِحَقِّهَا وَأَدَّى الَّذِي عَلَيْهِ فِيهَا  

Abu Dharr, I find that thou art weak and I like for thee what I like for myself. Do not rule over (even) two persons and do not manage the property of an orphan.  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ يَا أَبَا ذَرٍّ إِنِّي أَرَاكَ ضَعِيفًا وَإِنِّي أُحِبُّ لَكَ مَا أُحِبُّ لِنَفْسِي لاَ تَأَمَّرَنَّ عَلَى اثْنَيْنِ وَلاَ تَوَلَّيَنَّ مَالَ يَتِيمٍ